COURSERA.ORG Coursera - Free Online Courses From Top Universities | Coursera


coursera.org website information.

coursera.org website servers are located in United States and are responding from following IP address 54.192.142.133. Check the full list of most visited websites located in United States.

coursera.org domain name is registered by .ORG top-level domain registry. See the other sites registred in .ORG domain zone.

Following name servers are specified for coursera.org domain:

  • ns-1481.awsdns-57.org
  • ns-1590.awsdns-06.co.uk
  • ns-258.awsdns-32.com
  • ns-688.awsdns-22.net

and probably website coursera.org is hosted by awsdns-57.org web hosting company. Check the complete list of other most popular websites hosted by awsdns-57.org hosting company.

According to Alexa traffic rank the highest website coursera.org position was 539 (in the world). The lowest Alexa rank position was 923. Now website coursera.org ranked in Alexa database as number 794 (in the world).

Website coursera.org Desktop speed measurement score (74/100) is better than the results of 60.42% of other sites shows that the page desktop performance can be improved.

coursera.org Mobile usability score (95/100) is better than the results of 54.64% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of coursera.org (53/100) is better than the results of 37.88% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Nov-20-2018 794129
Nov-19-2018 923-88
Nov-18-2018 83528
Nov-17-2018 863-145
Nov-16-2018 71812
Nov-15-2018 73063
Nov-14-2018 79324

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coursera.org Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.


coursera.org whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.


Domain Name:COURSERA.ORG
Domain ID: D164365199-LROR
Creation Date: 2012-01-12T01:57:48Z
Updated Date: 2013-07-02T20:07:35Z
Registry Expiry Date: 2023-01-12T01:57:48Z
Sponsoring Registrar:GoDaddy.com, LLC (R91-LROR)
Sponsoring Registrar IANA ID: 146
WHOIS Server:
Referral URL:
Domain Status: clientDeleteProhibited -- http://www.icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited -- http://www.icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited -- http://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited -- http://www.icann.org/epp#clientUpdateProhibited
Registrant ID:CR107606638
Registrant Name:Brennan Saeta
Registrant Organization:Coursera Inc
Registrant Street: 381 E. Evelyn Ave
Registrant City:Mountain View
Registrant State/Province:California
Registrant Postal Code:94041
Registrant Country:US
Registrant Phone:+1.6509639884
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email:dns@coursera.org
Admin ID:CR107606718
Admin Name:Brennan Saeta
Admin Organization:Coursera Inc
Admin Street: 381 E. Evelyn Ave
Admin City:Mountain View
Admin State/Province:California
Admin Postal Code:94041
Admin Country:US
Admin Phone:+1.6509639884
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email:dns@coursera.org
Tech ID:CR107606665
Tech Name:Brennan Saeta
Tech Organization:Coursera Inc
Tech Street: 381 E. Evelyn Ave
Tech City:Mountain View
Tech State/Province:California
Tech Postal Code:94041
Tech Country:US
Tech Phone:+1.6509639884
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email:dns@coursera.org
Name Server:NS-1481.AWSDNS-57.ORG
Name Server:NS-1590.AWSDNS-06.CO.UK
Name Server:NS-258.AWSDNS-32.COM
Name Server:NS-688.AWSDNS-22.NET
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
DNSSEC:Unsigned

Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to(a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Afilias except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. For more information on Whois status codes, please visit https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en.

coursera.org server information

Servers Location

coursera.org desktop page speed rank

Last tested: 2016-06-12


Desktop Speed Medium
74/100

coursera.org Desktop Speed Test Quick Summary


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priority - 9 Avoid landing page redirects

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priority - 7 Reduce server response time

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priority - 4 Leverage browser caching

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coursera.org Desktop Resources

Total Resources127
Number of Hosts14
Static Resources110
JavaScript Resources48
CSS Resources3

coursera.org Desktop Resource Breakdown

coursera.org mobile page speed rank

Last tested: 2018-01-31


Mobile Speed Bad
53/100

coursera.org Mobile Speed Test Quick Summary


priority - 48 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Optimize CSS Delivery of the following:

https://d3njjcbhbojbot.cloudfront.net/webapps/buil…7d872353f64911ead0.css

priority - 34 Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://coursera.org/
https://coursera.org/
https://www.coursera.org/

priority - 7 Reduce server response time

In our test, your server responded in 0.68 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.

priority - 6 Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://d3njjcbhbojbot.cloudfront.net/api/utilitie…1&fit=crop&w=225&h=130 (10 minutes)
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coursera.org Mobile Resources

Total Resources132
Number of Hosts28
Static Resources84
JavaScript Resources27
CSS Resources1

coursera.org Mobile Resource Breakdown

coursera.org mobile page usability

Last tested: 2018-01-31


Mobile Usability Good
95/100

coursera.org Mobile Usability Test Quick Summary


priority - 3 Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 427 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <div class="bt3-col-md-12 c-pua-heading">Masters of Com…- Data Science</div> falls outside the viewport.
The element <div class="bt3-row">Enter the high…uary 15, 2018.</div> falls outside the viewport.
The element <div class="bt3-col-md-12…tton-container">Learn More</div> falls outside the viewport.

priority - 1 Size tap targets appropriately

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coursera.org Mobile Resources

Total Resources132
Number of Hosts28
Static Resources84
JavaScript Resources27
CSS Resources1

coursera.org Mobile Resource Breakdown

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coursera.org Ping

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coursera.org TRACEROUTE

Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.